ok, so seeing this page got me super excited https://www.smwcentral.net/?p=viewthread&t=79053
so, WOW! 15 new power-ups in SMW, cool right?
well turns out they are a nightmare to "implement"
it is involved in making your own SMW hacks and stuff
i wish someone would take a SMW vanilla and add these into it.
it could just be 15 bricks at Yoshi's house and 15 bricks at "Top Secret Area" that contain the items, it wouldn't be ideal, but it would work
i know the items werent made to originally work with the level design, but it would be fun to play vanilla SMW with these bonuses
the guy that was working on the "Redux style" SMW hack (that was great, btw) already added in a bunch of features from the Advanced version of SMW, i think this wouls fit in nicely too
the main thing it needs (and other hacks do this, i dont know why any of those hack makers dont release vanilla SMW with these upgrades) is Dragon Coins that remember if they are collected. they turn shadowy and blue (like a SM64 star after it's been collected) when you return to the level.
anyways, that's what should be done in SMW